1 Koban - Ninkō (1837 - 1858)
Features
| Denomination | 1 Koban |
| Catalog Number | C# 22b |
| Weight (g) | 11.25 |
| Shape: | Oval |
| Composition: | Gold (.568) |
| Metal Value (USD) | 1053.69 |
| Orientation | Medal orientation ↑↑ |
| Demonetized |
| Year | Mintage | Comment | Rarity |
|---|---|---|---|
| ND (1837 - 1858) | 8,120,000 | Unknown |